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Chronobiol Int. 1998 Sep;15(5):425-45.

Entrainment of the circadian system of mammals by nonphotic cues.

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Department of Anatomy, University of Cambridge, United Kingdom.


Although light is the principal zeitgeber to the mammalian circadian system, other cues can be shown to have a potent resetting effect on the clock of both adult and perinatal mammals. Nonphotic entrainment may have both biological and therapeutic significance. This review focuses on the effect of behavioral arousal as a nonphotic cue and the neurochemical circuitry that mediates arousal-induced entrainment in the adult rodent. In addition, it considers the role of nonphotic entrainment of the developing circadian system in perinatal life prior to the establishment of retinal input to the clock.

[Indexed for MEDLINE]

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